Germinação de sementes de alface obtidas de plantas cultivadas com diferentes doses de fósforo

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Data

2011-01-01

Autores

Kano, Cristiaini
Inacio Cardoso, Antonio Ismael [UNESP]
Villas Boas, Roberto Lyra [UNESP]
Oliveira Higuti, Andrea Reiko

Título da Revista

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Editor

Universidade Estadual de Londrina (UEL)

Resumo

This study was carried out at Sao Manuel Experimental Farm, UNESP/FCA, in Botucatu, São Paulo state, Brazil, with the objective to evaluate the lettuce seeds (cultivar Veronica) germination from plants cultivated with different phosphorus levels at harvest, in three temperatures and after two conservation period in dry chamber. At seed production stage, the experiment was conducted in randomized complete blocks, with five treatments (0; 200; 400; 600 and 800 kg ha(-1) of P(2)O(5)) and five replications. After harvesting, seed germination at 20 degrees C and under high temperatures (30 and 33 degrees C) was evaluated. After 15 and 25 months of conservation in dry chamber room it was evaluated germination at 20 degrees C. The P(2)O(5) levels evaluated did not affect seed germination soon after harvesting at the three temperatures evaluated, but, the higher the temperature, the lower the seed vigor. After 25 months of conservation, the lesser the P(2)O(5) rates, the lesser seed germination and germination speed index.

Descrição

Palavras-chave

Lactuca sativa L, Phosphorus fertilization, High temperatures

Como citar

Semina-ciencias Agrarias. Londrina: Universidade Estadual de Londrina (UEL), v. 32, n. 2, p. 591-597, 2011.